ABIO10 PGTW 171800
MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI//
SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN OCEAN/171800Z-
181800ZFEB2026//
REF/A/MSG/JOINT TYPHOON WRNCEN PEARL HARBOR HI/170751ZFEB2026//
AMPN/REF A IS A TROPICAL CYCLONE WARNING.//
RMKS/
1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY: NONE.
   B. TROPICAL DISTURBANCE SUMMARY: NONE.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.
2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA):
   A. TROPICAL CYCLONE SUMMARY:
      (1) AT 17FEB26 0600Z, TROPICAL CYCLONE 21S (GEZANI) WAS LOCATED 
NEAR 29.6S 43.9E, APPROXIMATELY 487 NM SOUTH-SOUTHEAST OF EUROPA ISLAND, 
AND HAD TRACKED SOUTH-SOUTHWESTWARD AT 30 KNOTS OVER THE PAST SIX HOURS. 
MAXIMUM SUSTAINED SURFACE WINDS WERE ESTIMATED AT 50 KNOTS GUSTING TO 65 
KNOTS. SEE REF A (WTXS32 PGTW 170900) FOR FURTHER DETAILS.
      (2) NO OTHER TROPICAL CYCLONES.
   B. TROPICAL DISTURBANCE SUMMARY:
      (1) THE AREA OF CONVECTION (INVEST 97S) PREVIOUSLY LOCATED NEAR 
11.6S 74.8E IS NOW LOCATED NEAR 11.8S 74.8E, APPROXIMATELY 301 NM SOUTH-
SOUTHEAST OF DIEGO GARCIA. ANIMATED ENHANCED INFRARED (EIR) SATELLITE 
IMAGERY DEPICTS AN ELONGATED LOW LEVEL CIRCULATION CENTER (LLCC) WITH 
CONVECTION STEADILY BUILDING OVER THE CENTER. ENVIRONMENTAL ANALYSIS 
REVEALS FAVORABLE CONDITIONS FOR DEVELOPMENT WITH LOW VERTICAL WIND 
SHEAR (10-15 KTS), MODERATE EQUATORWARD UPPER-LEVEL OUTFLOW, AND WARM 
SEA SURFACE TEMPERATURES (28-29 C). GLOBAL MODELS ARE IN GOOD AGREEMENT 
ON STEADY DEVELOPMENT WITH A GENERALLY SOUTHWARD TRACK OVER THE NEXT 48 
HOURS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 23 TO 28 KNOTS. 
MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1003 MB. THE 
POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN 
THE NEXT 24 HOURS REMAINS LOW.
      (2) NO OTHER SUSPECT AREAS.
   C. SUBTROPICAL SYSTEM SUMMARY: NONE.//
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